Changelog

#1147 Upgrade vulnerable direct dependencies (npm audit: 0 vulnerabilities)

#1137 Rectangle resize handle not working when placed on top of an image — drag moves the image instead of resizing the rectangle

#1138 Crop mode does not show the resize cursor when Ctrl is pressed while the pointer is already over a crop anchor

#1145 Elements cannot be resized after ungrouping until a multi-selection is made

#1141 No user-facing changes in this release — only an internal CI pipeline fix

#1130 Text selection: cursor must be inside the text box to select from the first character — improve to match PowerPoint/Illustrator behavior

#1131 onNodesChange not emitted on single-click selection of a draggable node (regression)

#1128 Azure Web PubSub store: room is set up in memory before its persisted state is loaded

#1126 Dragging a node stacked on top of the current selection silently does nothing

#1122 Avoid double interaction to drag

#1123 Fix text editing trigger inconsistencies when creating consecutive text nodes

#1114 Security: verify Azure Web PubSub ce-signature HMAC-SHA256 and enforce allowedEndpoints on incoming CloudEvents POST requests (store-azure-web-pubsub)

#1116 A single WebSocket close can disable room persistence

#1118 Denied WebSocket upgrades return without closing sockets

#1112 Preserve Node IDs When Grouping Nodes

#1039 Allow editing individual elements inside a group without ungrouping

#1080 \[alpha] API to manipulate document state natively on server-side

#1101 Add inline text labels to shape nodes (Rectangle and Ellipse)

#1104 Add Polygon Node and Polygon Drawing Tool with Label Support

#1106 Add y-indexeddb client-side persistence to WeaveStoreAzureWebPubsub for optimistic initial render

#1089 Refactor Image node and tools to avoid saving image fallback on the state

#1090 Remove usage of @syncedstore/core

#1091 Make Store Connection Lifecycle Asynchronous and Increase Azure Web PubSub Frame Size to 512 KB

#1088 Is not possible to draw a dot or very small line in the canvas using the brush tool

#1098 WeaveTextNode: textarea edit overlay misaligns due to hardcoded border offset and scrollHeight approximation

#1085 Grouped images disappear when reparented from the main layer to a frame

#1040 Improve Apple Pencil drawing quality in Brush Tool

#1064 Fix unnecessary console.log type errors / undefined errors in SDK

#1065 Fix error cannot set properties of undefined (setting 'dragStatus'), avoid console.log imprint

#1066 Failed to execute 'drawImage' on 'CanvasRenderingContext2D': The HTMLImageElement provided is in the 'broken' state

#1067 Avoid console.log error Cannot read properties of undefined (reading 'previousAction') in zoom / fit actions

#1068 Avoid console.log errors from: canDrag is not a function

#1069 Avoid console.log error defineMousePointer is not a function

#1041 Custom guides support and refactor of snapping and distance guides plugins

#1061 Remove unnecessary console.log on Azure Web PubSub store client

#1057 Provide an API to crop an image programmatically using an image and an element (bounding box)

#1059 Wrong initialization of heartbeat on the Azure Web PubSub store

#1055 When adding images with the Images tool, they are not positioned on a grid

#1051 When adding images with the Images tool, they are not positioned on a grid

#1053 Avoid OOM by cleaning up documents using Yjs destroy API

#1042 Undo does not work correctly after cropping an image with Ctrl+drag corner

#1036 Corrupt Image nodes prevent frames to complete initial loading

#1038 Is possible to add a frame inside a frame by pasting with right mouse button

#1043 Canvas does not auto-scroll when dragging an element near the border

#1044 Nodes disappear when moving between frames

#1029 Improve Stage keyboard move plugin to support movement without requiring Shift key

#1030 Expose roomId getter from internal store instance

#1028 Inconsistent / missing modifier & focus signals (Cmd+Shift+5, Space key) make interaction state unreliable

#1024 Text undo / redo doesnt' work correctly

#1025 Image cropping utility layer for keyboard (ctrl + cmd over an image) not updated correctly on undo

#1022 React store state is not reset when instance is destroyed

#993 Add Pages Support to enable multi-page canvas documents

#1016 Client-side rendering with multiple output formats (Image, Blob, Canvas, DataURL)

#1015 Frames occlude unrelated elements when rendering to image

#1017 Ctrl/Cmd + Tab breaks modifier key state and blocks selection

#1011 Support to export an area of the canvas

#1007 Improve grid plugin to support dots as square

#1001 Allow disabling Ctrl / Cmd key trigger for cropping on image nodes

#1005 Support node 24.x LTS

#1002 Fix image node selected wrapped area when ctrl zooming (crop rect)

#995 Remove timeout to refresh token on Azure Web PubSub

#996 Refresh reconnection attempts on Azure Web PubSub store once a connection is stablished

#989 Add support on the StrokeTool (and alias like ArrowTool) and stroke-single node to lock on angles while shift is pressed

#987 If no cursor defined on Image Node, cursor for loading is nor showed

#986 Avoid cleanup image node caches, when image is moved from container

#983 imageId is not propagating onto the node when using ImageTool or ImagesTool

#979 Avoid race conditions when moving Images to containers

#980 Avoid race conditions when copy / paste

#976 Avoid calling frontend api on server-side on the Image node

#969 New tool to upload multiple images

#968 Improve API and UX of the Image Tool

#972 Avoid race conditions on Standalone Store with async elements

#964 New smart layout and UX for the Text Node

#962 Validate transactionality when pasting Weave.js nodes

#966 Grid type change not rendered until zoom / pan interaction

#941 Improve Image Tool UX (Async persistence + Simplified Upload Flow)

#943 Avoid usage of window.weave global properties on Video Tool

#944 Avoid usage of window.weave global properties on Text Tool

#948 Improve performance of group / un-group operations

#950 Improve performance of drag / transform operations

#953 Refactor to support different state renderer and reconciler

#956 Avoid heartbeat mechanism on Azure Web Pubsub store

#937 Improve performance of selection

#938 Improve performance of text node when editing

#915 On the urlTransform property of Image nodes also inform the node

#928 Always-on text outline

#935 Adjust crop when image is downscaled while maintaining aspect ratio

#9307 Avoid setup window events on Stage node initialization

#905 Unified stroke tool with single stroke and customizable tips

#923 Constrain node dragging to horizontal/vertical axes when holding “Shift” key

#925 Allow to crop image by pressing cmd/ctrl on corners

#917 Avoid cache image onRender method

#918 Clamp fitToScreen and fitToSelection to steps limits

#911 Trigger onAsyncElementsLoaded event when the room has no async elements to load, like a new room

#913 Node keeps drag opacity when cloned via pressing alt key

#906 When using image cache, allow a config to set cached images pixel-ratio

#907 When using brush tool and cancel tool via escape the brush is still active drawing strokes

#903 Improve Image node by enabling caching

#901 Panning occurs while drawing a stroke with the brush tool

#897 Expose getExportBoundingBox function to make easy export of frames nodes

#899 Define frame node internal area export bounding bounds

#895 API to get the document of a store

#893 When click on a locked node if anything is selected selection is not cleared

#886 Avoid bubble events when dragging control elements on the measure node

#888 Moving an element causes it to jump or move in an uncontrolled way when zooming out

#889 Right-clicking on a locked node with WeaveContextMenuPlugin active selects the node

#878 Nodes copied from inside a frame are not pasteable into other Weave room

#876 Avoid high density circles to render when using the WeaveStageGrid in dot form

#874 Expose an event that send atomic changes performed by the user instance

#870 Change log level per child logger

#867 Sometimes the app gets blocked (relative to mutex operations)

#868 Cleanup correctly the selection when users disconnect or reconnect

#865 Avoid trigger context menu when element(s) is(are) locked

#861 Mechanism to avoid clashes when users handle / edit the same element (mutex)

#863 Users presence plugin

#859 Better handling of states when editing text or cropping images and other user move the elements to another container

#725 Connector node and action

#857 Homogenize styles on line, arrow and pen tools

#855 Measure node style customization

#847 Measure node & action

#853 Fix issue with resize plugin when no upscaling is defined not changing stage size

#848 Support to upscale via CSS transforms to improve performance

#845 Avoid flick comment node when the stage position haven’t changed

#843 Comment node when opened and trigger onFocus on same is positioning on (0,0)

#841 Force relative on weave dom node to avoid offsets when positioning internal elements

#839 Race condition when setting canvas backend on server-side

#837 Avoid race condition when using globalThis

#830 Expose a function to zoom to an specific scale when using the WeaveStageZoomPlugin

#831 Add an API to convert from JSON to Yjs binary and viceversa

#825 Improve usability of standalone store

#828 Remove Buffer dependency on browser client for Azure Web PubSub store

#827 Fix text editing position by taking into account canvas parent offset from window

#829 Cropping fails to activate

#823 Homologate window and global for globalThis

#818 Performance improvements

#814 Images disappear after repeated layer reorder operations inside a frame

#809 Center alignment guides during element drag for a frame in Weave canvas

#804 Polish create-apps and docs

#808 Homologate Websockets store to load initial room state as the Azure Web PubSub does

#806 Line size handlers not positioned correctly inside a frame

#802 Don’t copy to clipboard Weave.js data and image data, make separate API

#798 Copy / Paste images to/from external applications

#789 Support a simpler line drawing tool

#796 Opacity is not the original when dragging ends in some cases

#794 When instance is destroyed, window events that are defined on node handlers are not cleaned up

#792 Multi-selection feedback not updating correctly when dragging or transforming

#790 Handle nodes when moving to or from a container (lock and define it can move to a container)

#786 Handle big messages as chunks on Azure Web PubSub store

#784 Improve state transactional operations

#782 Cleanup Konva / Yjs from global on instance destroy

#777 Improve persistence with Azure Web PubSub storage

#773 Setup doc events correctly when client re-connects

#775 Line break not working after leaving and joining again a room

#771 When image loaded with Image Tool, has no size

#765 Improve room loading on Azure Web PubSub Store

#761 Set uncropped image properties when adding new images to the stage that are preloaded

#762 Disable correctly the stage on-edge panning

#719 Improve multi-selection feedback

#754 Image loading retro-compatibility

#727 When moving an item close to the edge of the canvas it "moves" automatically

#751 Improve server-side export packaging

#748 Fix cropping programatically not calling and save

#745 Preset uncroppedImage information on image load

#742 Images not applying crop or resize

#738 Improve packaging

#735 Handle loading corrupted images on Image node

#733 Make konva and yjs peerDependencies

#731 Missing exclude packages of Konva an Yjs on react package

#729 Fix packages that are external and Konva wrong imports

#722 Update to Konva 10 and removal of CommonJS support

#727 When moving an item close to the edge of the canvas it "moves" automatically

#748 Fix cropping programatically not calling and save

#745 Preset uncroppedImage information on image load

#742 Images not applying crop or resize

#735 Handle loading corrupted images on Image node

#724 Support for server-side rendering

#721 Patch Text auto-layout, to give more space towards render ok on server side

#716 Cropped image fails to mantain correct cropping when moved between layers

#718 Copy / paste not triggering when Caps Lock is active

#714 Cursor not refreshing when mouse over selection

#712 Improve node selection over nodes that are selected

#691 Make Minimap plugin stage rendering non-blocking

#709 Drag & drop image or video doesn’t drop on drag position

#707 Click + alt and drag sometimes doesn’t trigger

#701 Fix Video node TS types issues and rotation

#705 When ctrl + alt and drag, original node is moved a delta, but when reload its OK

#693 Clone elements on ALT + Click & Drag

#697 Context menu block UI when clicked on empty space

#681 Video node

#694 Crop and resize generates unexpected result

#678 Allow to change Frame background on the fly

#680 Move elements with the keyboard arrow keys

#679 Nodes borders looks too big when zooming out

#688 Resolve async load not called when image fails to load

#673 Expose getBoundingBox method and remove unnecessary getRealClientRect method augmentation of Konva.Node class

#670 Improved WYSIWYG of Text node edition mode

#666 Nodes selection event not triggering when selecting multiple by area

#668 Frame tool doesn’t allow to define the frame size when creating

#663 Check Frames undo / redo issues where nodes disappear

#662 Recalculate Text node size when properties change

#658 Text node edition mode bugfixes

#660 Improve Azure Web PubSub internal WS handling and externalize events

#656 Throttled Azure Web PubSub store sync events

#654 Throttle awareness events of WeaveUsersPointersPlugin

#652 Introduce some traces to connection handling on Azure Web Pubsub store

#650 Use server event bus instead of creating another instance on Azure Web Pubsub store

#648 Externalize connection handling on Azure Web Pubsub store

#646 Don’t return 400 on handleConnection when roomId is not specified on query string

#644 Don’t filter by group on connection handler for azure web pubsub store

#642 Improved handling of connections and o11y for Azure Web Pubsub store

#640 Support to define an async function to load custom fonts

#638 Export nodes as buffer fails with messages about tiling issues

#636 Initial changes on SDK to allow export to image on server-side

#634 Fix reconnection issues when token expires (client and server side) for Azure Web Pubsub store

#632 Missing method to set comment model after creation

#630 Force comment inner state to idle when a comment is deleted from outside viewing component

#626 Edge guides not showing completely when transforming

#622 Support multiple nodes selection on nodes distance snapping and nodes edge snapping plugins

#624 Support configuration of selection behavior

#620 Minimap plugin

#617 Comment tool, node and render plugin

#616 Improve mouse cursor handling on tools

#614 Make image double-click crop optional

#607 Allow to pan when selecting by area close to screen edges

#604 Selection region stops working after pressing space key

#608 When adding a Text node that contains spaces (used the space key) selection stops working

#612 Panning tool doesn’t work on touch devices

#602 Remove stroke caching

#600 Improved stroke tool (pressure support)

#598 sendToBack only moves custom nodes one step back

#596 Don’t stop paste event on document

#582 Brush tool looks choppy

#591 Apply downsizing on export to avoid browsers hard-cap

#593 "Send to Back" inside frame does not reorder correctly

#589 Export freezes on iPad with large content

#583 Frames can be rotated (they shouldn’t)

#585 Canvas becomes unusable after drag original star shape into frame

#578 Allow to define user color in WeaveConnectedUsersPlugin & WeaveUsersSelectionPlugin

#580 Brush tool draws unintended strokes during pinch zoom

#576 Images copied from the browser cannot be pasted

#574 Copying and pasting an image within the canvas

#567 Improve guides (edge and distance) plugins performance and UI

#571 Include new node IDs in onPaste event

#570 Brush tool not activated after switching from Move tool

#568 Some functionalities doesn’t work when loaded on Shadow Dom

#562 Crop image tool fixes

#564 While enter pressed user should be able to pan the canvas

#559 Paste here option not copying on the correct clicked spot

#553 Preserve zoom functionality when canvas loses focus

#554 Select nodes that are inside a frame when the frame is selected

#555 Improvements to copy / paste (homologate with Figma UX)

#167 Plugin that render reference guides when distance of target node among closest peers is similar to those between nodes intersected vertically or horizontally

#551 Add support for images copied from the file explorer

#549 Tune up grid when on dots mode to be more performant when pinch-zoom

#547 Update export tools API to return an image instead of opinionated result (download, etc.)

#544 fitToSelectionTool causes infinite zoom when node has zero width/height

#542 Adjust moveTool to be similar to the one in Figma

#535 Free draw tool lacks support for styles and post-editing stroke width

#537 Groupped frames broke on dragend

#534 Pinch zoom breaks on Safari iPad (Zoom becomes NaN)

#532 Provide an API to know if user can paste

#495 Allow groups to be resized

#513 When dragging objects to a frame should detect also that the mouse is over the frame, not just the intersection

#512 borderStrokeWidth is ignored when passed via WeaveNodesSelectionPlugin config

#528 Improve Frame Selection UX

#526 Remaining tools movement on touch devices

#508 Check tools to avoid multiple pointers, also determine if tool allows to zoom and pan

#524 Avoid preventDefault on pointerdown event

#522 Avoid text node loop update and azure web pubsub store updates

#520 Avoid merging state without references

#518 Added more loggin on azure web pubsub store

#516 Improve nodes state sync

#514 Logs to validate performance issues

#509 Don’t use name as user identifier on store

#506 Utility layer is being always cleaned up, limit to normal mode

#504 Improved panning and avoid long press on zooming

#502 Remove unnecessary console.log statements

#496 Node should be selected when right-clicked

#497 Allow node movement without requiring prior selection

#493 No automatic exit when the user switches to another tool when in crop mode

#500 Textarea not removed in microfrontend; document.getElementById fails

#272 Apple Pencil support

#488 Make zoom sensitivity configurable from the client and support inertia

#489 Support multiple nodes API for bringToFront / sendToBack utilities

#486 Support for Azure Identity credentials on Azure Web PubSub store

#484 Support cross-origin for images

#478 API to handle nodes visibility

#479 Select correctly the frame nodes when selecting on area mode

#481 Avoid context menu triggering on transform

#168 Tool to align nodes in the middle, top or bottom both vertically or horizontally

#472 Expose whether the content is empty

#477 Allow users to lock nodes (groups or individual elements)

#468 Migrate to pointer events

#470 Support pinch-to-zoom gesture on trackpads and touch devices

#466 Allow to filter image bounds on Export Nodes plugin

#458 Right-click opens context menu but also triggers canvas panning

#459 Panning with wheel event outside stage moves the stage

#460 Export selection doesn’t export image on base scale

#445 Improve the grid behavior

#447 Avoid plugins to throw when not installed

#448 Enable wheel pan without needing to hold the space bar

#449 Free draw tool incorrectly selects frame and switches cursor to hand when drawing inside a frame

#456 Fix invalid action inditex/gha-workflowdispatch@v1 on release workflow

#430 The fontStyle property is not applied to the textarea while writing a text node

#431 Editing a rotated text looks broken

#435 Generate base64 image on Export Nodes Action

#437 Add support to ShadowDOM

#426 Don’t set default plugins on React Helper

#427 Fix activating area selector when context menu is activated and then cancelled

#424 Fix zoom with wheel mouse

#306 Improve touch devices support

#419 Nodes, fill white and stroke black by default

#420 Nodes export to image is wrong

#332 Presence feedback when moving

#416 Update create app frontend

#411 Snapping lines when transforming taking into account transformed node

#413 Copying and pasting a frame causes a serialization error that breaks the canvas

#409 When calling updateNode on a frame’s title, the new title does not visually update immediately

#405 Text node, on edition mode, click outside not working

#403 Fix text jump when editing Text node

#400 Allow styles customizations on Frame title

#398 Sometimes when adding text on the Text node, it wraps without need to

#396 Refresh Azure Web PubSub store connection token

#381 Fix color picker issues

#388 Allow the image tool to receive a specific event to trigger the crop mode

#304 Improve stores connectivity

#387 Image border issues on the first render

#380 Allow WeaveTextToolAction to pass node properties

#377 Copy / paste with context menu fails

#357 On cursor position perform paste

#365 Improved drag & drop elements

#364 User pointer not disappearing on disconnection

#371 Images not appearing on library when copy/pasted from other place (external)

#360 Documentation issues

#353 Regular polygon node & action

#351 Missing zoom steps

#324 Arrow node & action

#325 Circle node & action

#326 Star node & action

#349 Fix zoom issues

#342 Fix image initialization

#343 Update create-app frontend

#339 Image resizing issue

#340 Frames resizing when interacting with them

#330 Performance improvements

#333 Update create-app frontend

#329 Fix initial state of images when cropping

#334 Don’t include d.ts as ts files on bundle

#322 Update create-app frontend

#327 Fix missing uncroppedImage property on image

#320 Fix module augmentation exports

#238 Crop image resizing improvement

#318 Building issues when finding definitions for augmenting Konva module

#305 Don’t allow to transform when more than one element is selected

#308 Allow to configure transformer configuration per node

#219 Improve frame

#302 Update create-app frontend

#291 Group of elements moving not maintaining position (all layers)

#300 Un-grouping elements are unordered

#310 Fix zoom in / out stepping before fitting

#311 Fix fit stage / selection plugin to fit correctly with the specified padding

#288 Provide a tool for erasing elements

#290 Maintain text node size when changed

#297 Changing font size causes text duplication and incorrect bounding box update

#292 Improve Azure Web PubSub to allow EventHandler options

#287 Update create-app frontend

#285 Text editing jumps when sidebars are opened

#283 Improve pointers and selectors rendering

#264 User selection awareness events plugin

#263 Awareness cursor UI improvements

#274 Update create-app frontend

#245 Frames drag-and-drop quirks when frames overlap

#270 "m" shortcut doesn’t work

#255 Update documentation images and favicon

#260 Update create-app frontend

#257 Fix loading errors on React provider

#248 Mouse wheel panning only when over stage

#250 Copy / paste on frame doesn’t set copied element on it

#253 Selected nodes not triggering snapping lines

#243 Fix UI create-app frontend linting issues

#235 Frame copy / paste not cloning internal nodes

#240 Fix text node quirks

#205 Transformer resize change size and not scale

#233 Update create-app frontend UI

#236 Missing class WeaveStoreAzureWebPubSubSyncHost on package @inditextech/weave-store-azure-web-pubsub

#227 Update documentation landing to new UI

#226 Update frontend boilerplate with latest UI changes

#217 Fix rectangle creation when click and drag-and-drop

#218 Fix drag selection to frame

#224 Frame visual issues

#189 Improve images action (avoid grey placeholder)

#215 Fix returned value when no state is initialized

#188 Text node edition state issues

#209 Improve copy / paste on context menu

#187 Improve the showcase of other users pointer logic

#185 Support to zoom in and zoom out with ctrl / cmd + wheel mouse

#200 Movement with mouse wheel breaks the grid movement

#186 Fix copy / paste events not triggering after click outside canvas

#176 Eslint warnings on create-app frontend package

#174 Improve UI with create-app frontend template

#172 create-app frontend changes to ask for user on rooms/:roomId page

#165 Sort dependencies and devDependencies alphabetically on create-app generated code

#161 API to remove selected nodes programmatically

#161 Fix create-app issues with Node 18 and missing dependencies

#159 Fix linting warnings and errors on frontend create-app

#157 Update frontend create-app UI/UX

#155 Frame node configuration improvements

#144 Improve users connection / disconnection feedback on Azure Web PubSub store

#148 Fix issue when snapping with corner anchors

#146 Fix stroke sizing / deformation when transforming

#143 Spanning also when resizing components

#139 API to obtain a Tree representation of the nodes hierarchy

#138 API to customize styling of frame element

#137 API to customize styling of selection elements

#134 Give feedback to the user if the element will be dropped on a Frame

#133 Moving elements to a frame or out of a frame when dragging

#130 Fix sdk peerDependency on packages

#128 Fix CLI templates issues

#126 Fix mapping typings for nodes, plugins and actions

#123 Refactor action methods names

#116 Refactor plugin methods names

#115 Refactor nodes to simplify the API

#119 Fix missing dependencies on CLI starter templates

#117 Switch to tsdown

#113 Fix CLI create-backend room connection controller issue on azure-web-pubsub flavor

#109 CLI to generate app from templates to quickstart an app

#107 Set Weave instance as reference on the React helper package

#105 Fix store packages external depdendencies

#103 Fix externalized dependencies on store packages

#101 Fix missing emittery dependency package on the @inditextech/weavejs-store-azure-web-pubsub package

#99 Fix proxyPolicy is not supported in browser environment on @inditextech/weavejs-store-azure-web-pubsub package

#95 Refactor server part for websockets store

#97 Refactor server part for Azure web pubsub store

#83 Improve move tool

#81 Support for mobile devices (iOS & Android)

#77 Copy/paste between rooms in different tabs

#76 Drag & Drop images from local computer

#74 Improve grid plugin performance

#71 Grid plugin, define two types: lines and dots

#72 API to enable or disable plugins

#68 Pan the stage with the mouse

#63 Separate types on its own package

#58 Pass fetch client in azure web pubsub client

#56 Pass fetch client params in azure web pubsub client

#52 CommonJS support

#50 Text node updates

#48 Copy/Paste improvements

#46 Added select all and unselect all to nodes selection plugin, added toggle state to hide users pointers and improve export nodes and stage tools.

#44 Improve crop images

#42 Improve Frame node selection

#40 Frame node and create action

#38 Nodes snapping plugin

#34 Perform undo / redo by user

#32 Define an API to allow elements to set properties previous to create the element

#30 Allow seeing what other users are doing like when they are creating rectangles, lines, etc.

#28 Add an action to allow interactions

#26 Improve awareness and disconnection of user for store-azure-web-pubsub

#15 Avoid use weave.js packages internally as peer-dependencies and setup author and maintainers properties on packages

#12 Automatic changelog generation

#10 Fix packages names to be on @inditextech scope

#8 ESLint OSS rules

#2 Improve rendering handling

#65 Azure Web PubSub package errors with missing imports

#60 Missing params propagation on store-azure-web-pubsub client

#36 Fix add scope to undoManager

#24 Bug when loading rooms with text or images

#18 Fix awareness not working on store-azure-web-pubsub